Sallet, n. [F. salade, Sp. celada, or It. celata, fr. L. (cassis) caelata, fr. caelare, caelatum, to engrave in relief. So called from the figures engraved upon it.].
A light kind of helmet, with or without a visor, introduced during the 15th century. [1913 Webster
"Then he must have a sallet wherewith his head may be saved."